| ( | X | × | 43257 1000000 | × | 180 | ÷ | 360 | ) | + | X | × | 8637 1250 | × | 103 100 | = | 30000000 |
| 方程左边 = | ( | X | × | 43257 1000000 | × | 180 | ÷ | 360 | ) | + | X | × | 889611 125000 |
| ( | X | × | 43257 1000000 | × | 180 | ÷ | 360 | ) | + | 889611 125000 | X | = | 30000000 |
| 方程左边 = | X | × | 43257 1000000 | × | 180 | ÷ | 360 | + | 889611 125000 | X |
| = | X | × | 43257 2000000 | + | 889611 125000 | X |